When something about the physical world changes, information about that change ripples out in every direction in the form of waves. Join Shini as she uses a piece of rope to demonstrate and describe various types of waves and their properties. A wave is usually made up of a bump on the top called a crest and a bump on the bottom known as a trough. Crests and troughs help define various properties of waves such as amplitude, wavelength, frequency, and wave speed. Waves can take various forms such as pulse, continuous, sinusoidal, and transverse waves. However, all waves have something in common, that is, they transfer energy.
The video satisfies the 4-PS4-1 requirement of fourth-grade science proficiency.
Students who demonstrate understanding can: 4-PS4-1. Develop a model of waves to describe patterns in terms of amplitude and wavelength and that waves can cause objects to move.